////////////////////////////////////////////////////////////////////////////////////
//重建除device之外的一切D3D资源
public void SetupDevice()
{
//重建所有的Mesh
if (ms.mesh == null)
{
ms.CreateExtrusionMesh(device);
}
if (ws.mesh == null)
{
ws.CreateWallMesh(device);
}
//重建所有的VertexBuffer
if (pl.vertexbuf == null)
{
pl.CreatePartitionLinesVertexBuffer(device);
}
if (wpl.vertexbuf == null)
{
wpl.CreateWallPartitionLinesVertexBuffer(device);
}
//一体创建sl及其VertexBuffer
if (sl == null)
{
sl = new SelectionLines(ms.polys[curr_district]);
sl.CreateSelectionLines(device);
}
////创建显示所需的字体
if (d3dfont_selected == null)
{
d3dfont_selected = new Microsoft.DirectX.Direct3D.Font(device, font_selected);
}
if (d3dfont_hud == null)
{
d3dfont_hud = new Microsoft.DirectX.Direct3D.Font(device, font_hud);
}
//设置信息框背景贴图
if (bkground_hud == null)
{
bkground_hud = new Texture(device, bmp_hud, Usage.Dynamic, Pool.Default);
}
//创建显示信息框的精灵
if (sprite == null)
{
sprite = new Sprite(device);
}
}
////////////////////////////////////////////////////////////////////////////////////
void Game_KeyDown(object sender, KeyEventArgs e)
{
switch (e.KeyCode)
{
case Keys.C:
EnableColoring = !EnableColoring;
EnableLights = false;
ms.mesh.Dispose();
ms = new ExtrusionMesh(sec, Color.White, EnableColoring);
ms.CreateExtrusionMesh(device);
break;
case Keys.Escape:
case Keys.Q:
Close(); break;
case Keys.K: //距离
//地图越大，将距离调最远时，越容易出现被culling的现象，估计跟projection有关
camera.IncreaseRadius(100F);
//if (scaling + 0.1F <= 5) scaling += 0.1f;
break;
case Keys.J: //距离
camera.DecreaseRadius(100F);
//if (scaling - 0.1F >= 0.1) scaling -= 0.1f;
break;
case Keys.Left: //视角
camera.DecreaseLongitude((float)(0.02 * Math.PI));
break;
case Keys.Right: //视角
camera.IncreaseLongitude((float)(0.02 * Math.PI));
break;
case Keys.Up: //视角
camera.IncreaseLatitude((float)(0.02F * Math.PI));
break;
case Keys.Down: //视角
camera.DecreaseLatitude((float)(0.02F * Math.PI));
break;
case Keys.Z: //光线方向
dir_light.AdjustLongitude((float)(-0.02 * Math.PI));
break;
case Keys.X: //光线方向
dir_light.AdjustLongitude((float)(0.02 * Math.PI));
break;
case Keys.A: //光线方向
dir_light.AdjustLatitude((float)(0.02 * Math.PI));
break;
case Keys.S: //光线方向
dir_light.AdjustLatitude((float)(-0.02 * Math.PI));
break;
case Keys.F: //区域线框
DisplayWireFrame = !DisplayWireFrame;
break;
case Keys.L: //光照开关
EnableLights = !EnableLights;
break;
case Keys.H: //水平面开关
DisplayHorizonalMesh = !DisplayHorizonalMesh;
break;
case Keys.V: //垂直面开关
DisplayVerticalMesh = !DisplayVerticalMesh;
break;
case Keys.I:
DisplayInfoHUD = !DisplayInfoHUD;
break;
case Keys.R: //复位world平移矢量和camera半径
world_translation = center;
camera.ResetRadius();
break;
#if (!FULL_SCREEN)
case Keys.O:
string fn = Program.SelectSecFile();
if (fn != null)
{
//从头创建所有的一切！
CleanupGraphics();
GC.Collect();
ResetAll(fn);
InitializeGraphics();
}
break;
#endif
case Keys.OemPeriod:
curr_district = (curr_district + 1) % ms.polys.Length;
sl.Dispose();
sl = new SelectionLines(ms.polys[curr_district]);
sl.CreateSelectionLines(device);
curr_centroid = ms.polys[curr_district].GetCentroid();
GenerateMessageString();
break;
case Keys.Oemcomma:
curr_district = (curr_district + ms.polys.Length - 1) % ms.polys.Length;
sl.Dispose();
sl = new SelectionLines(ms.polys[curr_district]);
sl.CreateSelectionLines(device);
curr_centroid = ms.polys[curr_district].GetCentroid();
GenerateMessageString();
break;
default:
Debug.WriteLine(e.KeyCode);
break;
}
}